--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -70,7 +70,7 @@
 # warnings
 if(UNIX AND NOT CYGWIN)
     if(${CMAKE_SYSTEM_PROCESSOR} MATCHES "^x86")
-        string(APPEND CMAKE_CXX_FLAGS " -Wall -Wextra -Werror -Wno-char-subscripts -Wno-unused-parameter -Wno-sign-compare -Wno-reorder -Wno-unused-local-typedefs -Wno-implicit-fallthrough -Wno-overloaded-virtual -Wno-strict-aliasing")
+        string(APPEND CMAKE_CXX_FLAGS " -Wall -Wextra -Wno-char-subscripts -Wno-unused-parameter -Wno-sign-compare -Wno-reorder -Wno-unused-local-typedefs -Wno-implicit-fallthrough -Wno-overloaded-virtual -Wno-strict-aliasing")
         if (APPLE)
             string(APPEND CMAKE_CXX_FLAGS " -fvisibility-inlines-hidden -fvisibility=hidden -Wno-unknown-warning-option -Wno-tautological-overlap-compare")
         endif()